I've installed a let's encrypt certificate on Zimbra and I'm running Nextcloud only without HTTPS (this is supported, right?). Both servers are on the same network without any firewall. I've followed all the steps in the wiki (https://wiki.zimbra.com/wiki/Zimbra_Dri ... mbra_Drive),

I've changed the zimbraDriveOwnCloudURL parameter for the test domain and ran zmcontrol restart:

In this case, it works, but what should I do in a multi server environment? Should I install the zimbra drive extension on my proxy servers? I can't use the mailbox port since on my multi server environment I have multiple mailbox servers.

Hello AllI think perhaps i ve reach a solutionI had the same problem with owncloud 9 and owncloud10.All worked after this steps:1) Include a dns entry A type as mynameserver.mydomain.xx in A a.b.c.d2) Configure reverse dns for this3) Get a Let's encrypt free certificate and install it

An after all works.

Perhaps can help someone... i Think that if you uses a self signed certificate, it does not work and needs a perfect dns setup.